CAJ | 학술논문

以碳粉和蛋清作为造孔剂，利用固相法制备CaCu3Ti4O12（CCTO）多孔陶瓷．研究了造孔剂含量对CCTO多孔陶瓷体积密度、显微结构和介电性能的影响．结果表明，随着碳粉含量增加，体积密度先增加后减小；而随着蛋清含量增加，体积密度先减小后增加．和碳粉相比，蛋清加入制备的试样具有较小、较均匀的孔隙．当频率大于331．5KHz时，添加碳粉可以降低介电损耗．当频率大于4KHz时，添加碳粉介电常数有所下降．当频率大于2KHz时，添加蛋清可以增大介电损耗，但是增加幅度较小．添加蛋清可以增大介电常数．
이탄분화단청작위조공제，이용고상법제비CaCu3Ti4O12（CCTO）다공도자．연구료조공제함량대CCTO다공도자체적밀도、현미결구화개전성능적영향．결과표명，수착탄분함량증가，체적밀도선증가후감소；이수착단청함량증가，체적밀도선감소후증가．화탄분상비，단청가입제비적시양구유교소、교균균적공극．당빈솔대우331．5KHz시，첨가탄분가이강저개전손모．당빈솔대우4KHz시，첨가탄분개전상수유소하강．당빈솔대우2KHz시，첨가단청가이증대개전손모，단시증가폭도교소．첨가단청가이증대개전상수．
CaCu3 Ti4 O12 (CCTO) porous ceramics were prepared by solid phase method using carbon powder and egg white as pore forming agents .It was studied that the contents of pore former effected on the volume density ,microstructures and dielectric properties for CCTO porous ceramics .The results show that with the increase of the contents of carbon powders volume density increases firstly and then decreases .How ever ,density decreases firstly and then increases with the increase of quantity of egg white .The samples with egg white possess the smaller and more uniform pores contrast to the sample containing carbon powders . Adding carbon powders can reduce the dielectric loss when the frequency is greater than 331 . 5 KHz .Dielectric constant decreases while adding carbon powders after 4 KHz .The dielectric loss increases with adjunction of egg white as the frequency is greater than 2 KHz but increa‐ses smally .T he dielectric constant increases w hile ow ning egg w hite .